Liquid-relief valve



Jan. 20, 1931. G. CAMPBELL I LIQUID RELIEF VALVE Filed Aug. 26, 1926KWWA g1 MWL A TTU/m15 ya.

.and this ymay be adjustedinwardly to in-` crease ythe e. compression,and .vice versa, by

"'- Lchamber 19 andfrom the casing projects in-` y 4wardly a post orextension 20 having an out# 'I Ineansof a screwl7 having a locknut 18holding it in the kdesired adjustment. Y n nside the body or casing12.isthe valv let ypassage-or bore 21, theI inner extremity of which isfittedwith a valve seat or` nozzle 22,

the passage within which is preferably atlv rightangles tothe diaphragm10 andthe ef# fectiv'e'or seating surface ofk which yis parallel l with.the diaphragm. Opposite tothe valve* seat 22 is the movable valvemember 23,`wh ich may consist of a simpleat; disk supported inagniovable yhead 24,. andl clamped ,mthe' `recess ofthe head-by anapertured nut orrire-r taining ring 25.l .c The head 24 is formed-with-an outstandingystem 26by whichit isguided y as thefvalve'more or lessopensor closes.` vThe l stemftgis provi'dedwith a longitudinale-pasy`sage227V connectingiwith a laterall passage`28 by which thepressureiinthe valvechamber 19 may be communicated to the space at theyendof the Stem26 to preclude theeifect ofa` y The valve disk 23 vandgitscarryinghead "24;" are mounted at theV forward end of a yoke `:.30attached vat the forward side'ovf-thedia-`v` phragm- 10,v its. threadedshank extendilfigk through vinto clamping engagement "with the ldiaphragm disk 11;l T he yoke 30e`itends Aforf Vwardly atboth sides oftheprojection 20 'and k'to the twoisides of the yoke are connectedV by atop Jpiece or archV 31, sovthat in front view the yoke will takesubstantially thelshapeof 'the' letterUVV inverted. The valve disk 'head24 is connected to the arch by'a set screw 32.v

as seen in Fi'g. 1,fand atfthe two sides arc vset screws V33, as seen inFig.l 3. These' de- "scribedparts may be accessible throughna re`movable cap 35 having ascrew engagement f v with the body 12. This screwcap has an in-A wardly extending barrel 36 forming agilide forthestemf26 of the head 24, while the bare.' ,rel is surroundedbyacompressed spring37 pressing. rearwardlyv against the head. and

ytending to close the valve forcing'the disk 231tow`ards the seat22s 1 yy l y y y It will be observed that the adjustment of y thevalveiscontrolled by the position ofy the` diaphragm which-in turn yisdetermi-ned byf thefexisting train pipe pressure in the chamber 19opposed-by. the existingpressure inthe-chamber 38and modified by theper-Vmarient pressures of the containedsprings14,

, 15 4and 37. Inaccordance' with this inventiontherear chamber38-isemployed as a valve controlling chamberyfor example-by continually'passing into and fromthe chamber hot water or steam or acombination of them, namely ,by means of inlet'andv outletorificesV'orequivalent progressive escapefclevices, and utilizing-the varyingresulting pressurein the controlcliamber by applying it tothefsensitive'diaphragm to efectfthepartial or total than :when steamonly traverses the orifice,

this bein'grdue to` the well known :restrictive action'y ofthe-oriceupon flow,t of Steam '01# 0theri ga,s ,m f M I i The orifices,`.connecting passages i may be `advantageously.4 and., compactly providedasl follows. AA vertical bore or passage 39 is y l shown formedin theupper partof the rear casing 13 extending from the y periphery into; thecontrol chamber -38 while a similar vertical passage40' is shownformedfin the lower part of theV same" casing; the two vpassages 'v 39and 40 being exteriorlyclosedby plugs 41.

K ,-.Aihorizontal passage 42 leadingto Ithe inl let orifice 48 may beformedjas aV horizontal bore through fthvecasing :13, stoppedjrby anexternalplug whilel asimilar :horizontal ypassage43 I naygbe vprovided,at the lower part f 'fof-"the casing in connection with Vthe outletyorifice, this also stopped by afplug` 44. In

'alinenplent with j thel passages 42 and"V 43 there are shown vboresfor. passages 45 `and 46 produced. at -therearsideof the valve casing 12, l the upper passage 45 `connecting with'- the upper partof the valvechamber,.while the lower passage 46 connects withv the outlet passage21:.leading to the ldischarge lpipe 9.

An inlet'-;oriiice"48 is shownf interposed .in

line Withthe upper passages 45 and 42,*while an out-let.y orifice49issilhlarly interposed be-v tweenthelower. -passages@ and; 46. The sizesof the orificeslwill vary in accordance with icoV theJ expectedpressures, but preferably' the outlet orifice has a larger area than theinlet 'orifice Y. f. l

An advantageous way ofv producing the inlet and outletorifices isvby soextending the piece of sheet metal .lwhich constitutestlie diaphragmasto standvacross the orifice pas.v *Y

sages',;and forming the orificesby punctures in suchfsheet vmetaldiaphragm. The arrangementfindicated ,in ,the figures may be varied.Thus as indicatedinFig. 4 the passages 45 and42 may be lomitted andtheinlet orifice 48'l may be formed directly in the annular or vflexingportion ofthe diaphragm' 10"` clamped between the casings 12a and 13a.

On the otherv hand-'the outlet orifice instead of dischargingthrough'pa'ss'age 46' into the same finalpdischarge pipel 9whichreceives thedischarge ofthe valve may` discharge di'- sirabletomaintain the heating system in acvtion and the trainpipe free ofcondensate. 1 The orificey system is shown as containing two orifices,but might contain more, in vtalldem,l lthe final one being. preferablythe'A largest, vand discharging to atinosl heric or comparablyv'lowfpressure` The nal .dis-f charge may be into ,thel heating pipes ofthe car because the 'heating pressure is low due to thelcommon use of apressure reducer or va-V por regulator between the train pipe andmating-pipes. For` example the Voutlet 9y from the reliefl valve mayextend to the inlet of the car heating pipes.- This utilizes the' heat"of the outlet steam and combines the final water` discharge with thatfrom the heating coils.

L vention;lbut since various matters of opera,-A

.l There has thus ,beendescribeda vuidrelief valveiortrap embodying theLprinciples and .attaining the objects of the present intion,arrangement, combination, structure and detail may k.bemodified without`departing from the principles, it is not intended to limitthe inventionvto such matters except sof far as set forth inthe appended claims.

f What is vclaimed is:`

1." Apparatus for automatically dischargin y accumulated `condensatecomprising a collecting passage, a reliefl valve arranged to receive anddischargecondensateand having aV pressure sensitive devicecontrollingit,f,a

chamber at one side ofsaid sensitive device delivering full pressurethereto, and a cham-V ber at the other side delivering depressedpressure thereto, av connection conducting condensate to. the secondchamber lwith rejstricted inlet thereto, anda continuously open4restricted "outlet Vfrom said second chamber." e e ,2. Apparatus forautomatically discharging ,accumulated condensate comprising aVcollecting passage, a relief valvev arranged to receive anddischargecondensateand having a pressuresensitive device controlling it, achamber at one side of'said sensitive device VdeliveringV fulll pressurethereto, and a chamber at the other side. delivering depressed pressurethereto, aconnection conducting condensate to the second chamber withrestricted inlet, a restricted outlet from said secondv chamber, andmeans working with the depressed pressure to keep open the relief valveexcept Whenthe fulll pressure is greatly in excess of the depressedpressure.

- 3. A relief valve for relieving mixed fluid of excess liquidcomprising a casing containing a 'pressure sensitive device withk avalve chamber at one side thereof and a control chamber athe-othe'rside, passages conduct-v ing fluid to the valve chamber and conducti ingexcess l liquid to the controll chamber through an interposed orifice,an orifice outletfrom the control chamber permitting ycontinuousescapefrom the control chamber during admission of liquid thereto l'throughVthe 'i first orifice, a valve arranged for` discharging liquid from: theyvalvel chamber, and a connection whereby theV sensitivev deviceadjuststhe valve 'to dischargeliquid when in excess yand vice versa.v v

4. Liquid relief-apparatus n for automatically vdischarging accumulaedvliquid coin,-`

prising {a` valve casing f containing a vvalve,

chamber and a controlchamber separated by a pressure sensitive "device,ka-valve means insaid valve chamber arranged to be controlled by themovements ofthe `sensitive vdevice and adapted'bodil'y togdischargeaccumulated liquid, -an orifice connection "from the valve chamber tothe Control chamber anda continuouslyr open orifice'outlet ,fromthe'control chamber. l

5. Liquid reliefl apparatus for automatically discharging acmmulatedkcondensate comprising a valve casing containing a valve chamber andr avapori'zation,y chamber separated by a pressure sensitive device, avalve `means in said valve chamber 'arranged to be controlledby themovements of4 the sensitive mulatedliquid, an orificeconnection from thevalve chamberto the .vaporization chamber andan orifice outlet vfrom'the vaporization chamber; whereby constant .flow 'occurs through `thevaporization chamberfto the atmosphere, whereas'v direct dischargethrough the valve chamber occurs onlyV as permitted by or undercontroler thedi'aphra'gm. A6. Apparatus" as"` in claim 5 and whereinvboth the orifice'inlet tol andy orifice outlet from the vaporizationchamber are formed in chamber-to-chamber passage-sin the casing walls. i

7 Liquid relief apparatus forautomati- 'cally dischargingl 'accumulatedhot liquid comprising a valve casing containing a valve chamber anda'vaporization chamber with a pressure sensitive device separating them,a valve means in said valve chamber arranged to be controlledV by themovements of the sensitive 'device and adapted bodily to, dischargeaccumulatedliquid, an orifice formed directly in' the sensitive devicefor connection from the valve chamber to the vaporizaydevice and adaptedbodily todischarge accullO tion chamber and a continuously open orificeY formediin the Y the valvefchamber to the *control chamber, Y and'vanforiiice]outlet-from*'the control` o c f Y valve arranged to receiveand discharge con-UT chamber. Y f 9- Apparatus the i'irstoriceconnection inthe casing Walls,

.l .v `is formed near the Vupper .part ofthe'valvechambei,'vvherebyliquid ,will notlftraverse l the sameuntil thevalvechamber iills' up.rloically discharging accumulatedfliquid corn-f p j chamber and avconstantly 'openjoriiice outleti e VlOQLiquid reliefgappfa'ratus `forautomatprising 'afwalledcasing containingea valve Y chamberfand acontrol chambergivvith apres- Vsure "sensitive diaphragm separating"them,`.ja l"valve means in said valvechamber arranged Y to be controlledbythe movements-of 'the diav phraginand adapted bodilyto dischargevacg'N cufmulated liquid, an orifice connectionlfrom `v Y the'valve chamber?to the control chamber 1 andan oriiice outletfrom the control cham!v'ber'; the first' orifice connection being :formed in Athe'ca'singvvalls7'and' the Voi'iiceitself be# as inv claim v-8 land wherein14:.1Rvelief apparatus. fori-f aiitomatically discharging .accumulatedstean'n. condensatem i 'Comprising @valveicsigwntallng .a Valve filchamber and a vaporizationchamber:witha kpressure sensitive devicesepara'tin'g';them,a .'O .1f g f., valve means'insaid-valve chamberarrange`d-- to ybebpened b5/approaching movement offv I; thefsensitivedevice! and-vice versa'V andfl` adapted to v discharge condensate," acons tantlyV open orifice connection l fromga! high .i

pointvvin the valve chamber. it()y thecontrol fromfthe' control chamber..In testimony Wh reof, z I signature hereto.

ing 'an'eXtension of the diaphragm extendingy c y l into the casing`Walls.

11; Liquid relief apparatus ffor'aut'omat" Y yicallydischargingaccumulated l liquid .com-

prisinge'a valvecasingvlcontaining ayvalve` 1 chamber and a'controlchamber separatedrbyi` jr.

a'pressure sensitive device,v a valve means in f said valve chamberarrangedto be controlled by the movements `of the sensitive device andadapted'fbodily to dischargeaccumulated Y y c liquid, an orificeconnection :trom thegvalve Y chamber to the control chamber', and anoriv fice outlet from the control chamber arc K ranged in the .casingWalls and discharging into the valve chamber discharge outlet.

12. Relief-apparatus 'or. automatically!` i Y densate and havingapressure sensitive device controlling 1t7 a` chamber at one side of Ythereto; a' connection conducting excess con-p densate tothevaporization chamber With a` restricted inlet thereto,and arestricted out- K jY 5o l said sensitivedevice delivering full'pressurethereto,f andv a vaporization chamber yat the otherV side delivering'`depressed pressure let from said second ch'amberi-f v13. Liquid reliefapparatus for automats ically discharging accumulated liquid c o'nrl-y ii prising a collecting passage, a relief lvalve arf"l ranged to receiveand discharge the liquidjl and having a. pressuresensitive devicecontrolling it7 a first chamber at one side of said v` sensitive devicedelivering -full pressure theretogaiid achamber'atfthe other .sidedeflic.; l Y

have

Y 1 GRANT CAMPBELL",

